Heat Dissipating Fin Assembly with Segmented Dust Exhaust
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Solution Overview
Problem
The accumulation of dust at the outlet of heat-dissipating fans reduces their efficiency and stability, as it affects the rotation speed and heat dissipation performance of electronic products.
Innovation Solution
A heat dissipating fin assembly with a design that includes a combination of first and second heat dissipating fins, an inner cover, and an outer cover, where the inner end has a lower density to prevent dust accumulation and the outer end has a higher density to maintain a larger heat dissipating surface area, along with an opening between the covers to exhaust dust, enhancing the dusting function and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the heat dissipating fin assembly uses a dense fin structure to increase heat dissipation surface area, then heat dissipation efficiency is improved, but dust accumulation increases at the outlet
Solution Approach 1:
The fin assembly is segmented into two distinct regions: a first region with fins extending from the inner end to maintain heat dissipation surface area, and a second region with fins extending from the outer end to create a dust-free outlet. This segmentation allows each region to serve its specific function - heat dissipation and dust prevention respectively.
Solution Approach 2:
Different regions of the fin assembly are given different fin densities and configurations. The first region has fins optimized for heat dissipation while the second region has fins configured to prevent dust accumulation at the outlet. This local differentiation resolves the contradiction by allowing heat dissipation efficiency in one area while preventing dust accumulation in another area.
2Area of stationary object
If the fin density is increased throughout the assembly to maximize heat dissipation, then heat dissipation surface area is improved, but dust accumulation at the outlet worsens
Solution Approach 1:
The assembly is divided into two functional zones with different fin configurations. The first zone maintains high fin density for heat dissipation, while the second zone has reduced fin density or specific fin arrangements that prevent dust accumulation, thus resolving the contradiction between surface area and dust prevention.
Solution Approach 2:
The fin density is optimized locally for different purposes: high density in the first region for heat dissipation and appropriate density in the second region for dust-free airflow. This local optimization allows the system to achieve both heat dissipation efficiency and dust prevention.
3Device complexity
If a simple fin structure is used to reduce manufacturing complexity, then device complexity is reduced, but dust accumulation control capability is insufficient
Solution Approach 1:
The fin assembly is segmented into two regions with different fin configurations. This segmentation provides dust control functionality without requiring complex additional components, as the dust prevention is achieved through the fin arrangement itself rather than separate dust removal mechanisms.
Solution Approach 2:
The fin assembly serves dual functions: heat dissipation through the first region and dust prevention through the second region. This multi-functionality is achieved within a single integrated structure, avoiding the need for separate dust removal devices and maintaining manufacturing simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively prevents dust accumulation at the inner end while maintaining a high heat dissipating surface area at the outer end, improving the overall heat dissipation efficiency and extending the lifespan of electronic products by ensuring continuous airflow and dust removal.
Implementation Method 1
a heat dissipating fin assembly suitable for a fan... improve the heat dissipating efficiency
Implementation Method 2
heat dissipating fin assembly... dissipate the generated heat
Data Source
AI summary
A heat dissipating fin assembly includes a bottom, a plurality of first heat dissipating fins, a plurality of second heat dissipating fins, an inner cover and an outer cover. The first heat dissipating fins extend from an inner end toward an outer end. The second heat dissipating fins are arranged between two of the first heat dissipating fins in staggered. The inner cover is disposed near the inner end and connected to the first heat dissipating fins. The outer cover is disposed near the outer end and connected to the second heat dissipating fins. The inner cover and the outer cover are separated to form an opening, and the dusts entering the heat dissipating fin assembly through the inner end are ejected via the opening. The second heat dissipating fins extend from around the opening to the outer end.